#18404D#18404D

#18404D is a dark, muted cyan. Relative luminance 0.044; OKLCH L 34.9% C 0.050 H 222.4°. Best body text is #FFFFFF at 11.17:1 contrast (WCAG AA passes).

Color values

HEX	#18404D
RGB	rgb(24, 64, 77)
HSL	hsl(195, 52%, 20%)
HSV	hsv(195, 69%, 30%)
CMYK	cmyk(68.8%, 16.9%, 0%, 69.8%)
CIE-LAB	lab(24.94, -9.35, -12.05)
CIE-LCH	lch(24.94, 15.25, 232.20°)
OKLab	oklab(34.92% -0.0367 -0.0336)
OKLCH	oklch(34.92% 0.05 222.4)
XYZ	xyz(3.5491, 4.3964, 7.6813)
Luminance	0.0440 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18404D #4D2518

analogous

#184D40 #18404D #18264D

triadic

#18404D #4D1840 #404D18

tetradic

#18404D #40184D #4D2518 #264D18

square

#18404D #40184D #4D2518 #264D18

split-complementary

#18404D #4D1826 #4D4018

monochromatic

#071317 #09191E #18404D #27677C #358EAA

Accessibility & contrast

On white

11.17

#18404D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.88

#18404D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18404D

11.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18404D	#FFFFFF	#000000	##FFFFFF
##18404D	1.00	11.17	1.88	11.17
#FFFFFF	11.17	1.00	21.00	1.00
#000000	1.88	21.00	1.00	21.00
##FFFFFF	11.17	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#383E4E

Deuteranopia (green-blind)

#31394D

Tritanopia (blue-blind)

#004444

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #18404d;
/* rgb */ color: rgb(24, 64, 77);
/* oklch */ color: oklch(34.9% 0.050 222.4);

Tailwind

colors: {
  custom: {
    50: '#5c747e',
    500: '#18404d',
    950: '#000000',
  },
}

SCSS

$custom: #18404d;
$custom-light: #5c747e;
$custom-dark: #000000;

JSON

{
  "hex": "#18404d",
  "rgb": {
    "r": 24,
    "g": 64,
    "b": 77
  },
  "hsl": {
    "h": 194.717,
    "s": 52.475,
    "l": 19.804
  },
  "oklch": {
    "l": 0.34916,
    "c": 0.04975,
    "h": 222.4
  },
  "luminance": 0.04397
}

Semantic roles & 50–950 ramp

primary

#18404D

secondary

#844E3D

accent

#6F4CDC

background

#F5F7F7

surface

#E9EDEE

border

#C5C8C9

text

#04080A

muted

#797B7C

Preview Lab

Preview with #18404D

Body copy rendered with the generated semantic roles for this colour.

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